package com.mall.system.service;

import com.mall.common.constant.UserConstants;
import com.mall.common.core.domain.Ztree;
import com.mall.common.core.text.Convert;
import com.mall.common.exception.BusinessException;
import com.mall.common.utils.StringUtils;
import com.mall.system.domain.entity.SysDictData;
import com.mall.system.domain.entity.SysDictType;
import com.mall.system.mapper.SysDictDataMapper;
import com.mall.system.mapper.SysDictTypeMapper;
import com.mall.system.utils.DictUtils;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.PostConstruct;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

/**
 * 字典 业务层处理
 * Created by zhonglin on 2020/4/8.
 */
@Service
public class SysDictTypeService {

  @Autowired
  private SysDictTypeMapper dictTypeMapper;

  @Autowired
  private SysDictDataMapper dictDataMapper;

  /**
   * 项目启动时，初始化字典到缓存
   */
  @PostConstruct
  public void init() {

    List<SysDictType> dictTypeList = dictTypeMapper.selectDictTypeAll();
    for (SysDictType dictType : dictTypeList) {
      List<SysDictData> dictDatas = dictDataMapper.selectDictDataByType(dictType.getDictType());
      DictUtils.setDictCache(dictType.getDictType(), dictDatas);
    }
  }

  /**
   * 根据条件分页查询字典类型
   *
   * @param dictType 字典类型信息
   *
   * @return 字典类型集合信息
   */
  public List<SysDictType> selectDictTypeList(SysDictType dictType) {

    return dictTypeMapper.selectDictTypeList(dictType);
  }

  /**
   * 根据所有字典类型
   *
   * @return 字典类型集合信息
   */
  public List<SysDictType> selectDictTypeAll() {

    return dictTypeMapper.selectDictTypeAll();
  }

  /**
   * 根据字典类型查询字典数据
   *
   * @param dictType 字典类型
   *
   * @return 字典数据集合信息
   */
  public List<SysDictData> selectDictDataByType(String dictType) {

    List<SysDictData> dictDatas = DictUtils.getDictCache(dictType);
    if (StringUtils.isNotNull(dictDatas)) {
      return dictDatas;
    }
    dictDatas = dictDataMapper.selectDictDataByType(dictType);
    if (StringUtils.isNotNull(dictDatas)) {
      DictUtils.setDictCache(dictType, dictDatas);
      return dictDatas;
    }
    return null;
  }

  /**
   * 根据字典类型ID查询信息
   *
   * @param dictId 字典类型ID
   *
   * @return 字典类型
   */
  public SysDictType selectDictTypeById(Long dictId) {

    return dictTypeMapper.selectDictTypeById(dictId);
  }

  /**
   * 根据字典类型查询信息
   *
   * @param dictType 字典类型
   *
   * @return 字典类型
   */
  public SysDictType selectDictTypeByType(String dictType) {

    return dictTypeMapper.selectDictTypeByType(dictType);
  }

  /**
   * 批量删除字典类型
   *
   * @param ids 需要删除的数据
   *
   * @return 结果
   */
  public int deleteDictTypeByIds(String ids) {

    Long[] dictIds = Convert.toLongArray(ids);
    for (Long dictId : dictIds) {
      SysDictType dictType = selectDictTypeById(dictId);
      if (dictDataMapper.countDictDataByType(dictType.getDictType()) > 0) {
        throw new BusinessException(String.format("%1$s已分配,不能删除", dictType.getDictName()));
      }
    }
    int count = dictTypeMapper.deleteDictTypeByIds(dictIds);
    if (count > 0) {
      DictUtils.clearDictCache();
    }
    return count;
  }

  /**
   * 清空缓存数据
   */
  public void clearCache() {

    DictUtils.clearDictCache();
  }

  /**
   * 新增保存字典类型信息
   *
   * @param dictType 字典类型信息
   *
   * @return 结果
   */
  public int insertDictType(SysDictType dictType) {

    int row = dictTypeMapper.insertDictType(dictType);
    if (row > 0) {
      DictUtils.clearDictCache();
    }
    return row;
  }

  /**
   * 修改保存字典类型信息
   *
   * @param dictType 字典类型信息
   *
   * @return 结果
   */
  @Transactional
  public int updateDictType(SysDictType dictType) {

    SysDictType oldDict = dictTypeMapper.selectDictTypeById(dictType.getDictId());
    dictDataMapper.updateDictDataType(oldDict.getDictType(), dictType.getDictType());
    int row = dictTypeMapper.updateDictType(dictType);
    if (row > 0) {
      DictUtils.clearDictCache();
    }
    return row;
  }

  /**
   * 校验字典类型称是否唯一
   *
   * @param dict 字典类型
   *
   * @return 结果
   */
  public String checkDictTypeUnique(SysDictType dict) {

    Long        dictId   = StringUtils.isNull(dict.getDictId())
        ? -1L
        : dict.getDictId();
    SysDictType dictType = dictTypeMapper.checkDictTypeUnique(dict.getDictType());
    if (StringUtils.isNotNull(dictType) && dictType.getDictId()
                                                   .longValue() != dictId.longValue()) {
      return UserConstants.DICT_TYPE_NOT_UNIQUE;
    }
    return UserConstants.DICT_TYPE_UNIQUE;
  }

  /**
   * 查询字典类型树
   *
   * @param dictType 字典类型
   *
   * @return 所有字典类型
   */
  public List<Ztree> selectDictTree(SysDictType dictType) {

    List<Ztree>       ztrees   = new ArrayList<Ztree>();
    List<SysDictType> dictList = dictTypeMapper.selectDictTypeList(dictType);
    for (SysDictType dict : dictList) {
      if (UserConstants.DICT_NORMAL.equals(dict.getStatus())) {
        Ztree ztree = new Ztree();
        ztree.setId(dict.getDictId());
        ztree.setName(transDictName(dict));
        ztree.setTitle(dict.getDictType());
        ztrees.add(ztree);
      }
    }
    return ztrees;
  }

  public String transDictName(SysDictType dictType) {

    StringBuffer sb = new StringBuffer();
    sb.append("(" + dictType.getDictName() + ")");
    sb.append("&nbsp;&nbsp;&nbsp;" + dictType.getDictType());
    return sb.toString();
  }

}
